氨冷凝器泄漏原因分析及预防措施.pdf

氨冷凝器泄漏原因分析及预防措施

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游咸丰，卫卓雅，林俊鹏，张宁

(中国石油化工股份有限公司洛阳分公司，河南洛阳471100)

摘要：某石化公司的氨精制系统中，氨冷凝器发生了泄漏。经过分析，发现泄漏原因是循环水侧发生了腐蚀。为此，文章

详细描述了循环水流速偏低如何导致冷凝器管束结垢，进而形成氧浓度差电池，引发电化学腐蚀的过程。同时，还对微

生物腐蚀、操作不当等其他可能导致腐蚀的因素进行了分析和探讨。为了预防管束泄漏，提出了控制循环水流速不低于

1m/s，严格监控并控制循环水的水质指标，在氨冷凝器中增加跨线以提高水流分布均匀性，提升冷凝器管束的材质品质

以增强其耐腐蚀性，以及定期进行反冲洗以清除管束上的污垢和微生物。

关键词：氨冷凝器；循环水；流速；电化学腐蚀

中图分类号：TB657 文献标志码：A文章编号：1008-4800(2024)32-0133-04

DOI:10.19900/j.cnki.ISSN1008-4800.2024.32.034

LeakageCauseAnalysisandPreventiveMeasuresofAmmoniaCondenser

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YOUXianfeng,WEIZhuoya,LINJunpeng,ZHANGNing

(SINOPECLuoyangCompanyHenan,Luoyang471100,China)

Abstract:Intheammoniaref iningsystemofapetrochemicalcompany,aleakoccurredintheammoniacondenser.Afteranalysis,

itwasfoundthattheleakwascausedbycorrosiononthecirculatingwaterside.Tothisend,thepaperprovidesadetailed

descriptionofhowlowcirculatingwatervelocityleadstofoulingonthecondensertubebundle,whichinturnformsanoxygen

concentrationcellandinitiateselectrochemicalcorrosion.Additionally,otherpotentialcorrosionfactorssuchasmicrobialcorrosion

andimproperoperationareanalyzedanddiscussed.Topreventtubebundleleaks,measureshavebeenproposed,including

controllingthecirculatingwatervelocitytonolessthan1m/s,strictlymonitoringandcontrollingthequalityindicatorsofthe

circulatingwater,addingcrossoverlinesintheammoniacondensertoimprovewaterflowdistributionuniformity,upgradingthe

materialqualityofthecondensertubebundletoenhanceitscorrosionresistance,andconductingregularbackwashingtoremove

foulingandmicroorganismsfromthetubebundle.

Keywords:ammoniacondenser;circulatingwate